Title :

The Advantages of Landsat 8-OLI-Derived Suspended Particulate Matter Maps for Monitoring the Subtidal Extension of Amazonian Coastal Mud Banks (French Guiana)

Author(s) :

Abascal-Zorrilla, Noelia [Auteur]
Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens [LEEISA]
Vantrepotte, Vincent [Auteur]
Université du Littoral Côte d'Opale [ULCO]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Gensac, Erwan [Auteur]
Laboratoire Géosciences Océan [LGO]
Huybrechts, Nicolas [Auteur]
Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Equipe-projet HA [Cerema Equipe-projet HA]
Roberval [Roberval]
Gardel, Antoine [Auteur]
Laboratoire Ecologie, Evolution, Interactions des Systèmes amazoniens [LEEISA]

Journal title :

Remote Sensing
Special Issue Remote Sensing in Coastal Zone Monitoring and Management—How Can Remote Sensing Challenge the Broad Spectrum of Temporal and Spatial Scales in Coastal Zone Dynamic?

Pages :

1733

Publisher :

MDPI

Publication date :

2018

ISSN :

2072-4292

English keyword(s) :

Keywords: suspended matter
mud banks
ocean colour
Landsat 8
French Guiana

HAL domain(s) :

Planète et Univers [physics]/Interfaces continentales, environnement

English abstract : [en]

The coast of French Guiana is characterised by the northwestward migration of large mud banks alongshore and by high concentrations of suspended particulate matter (SPM) resulting from the strong influence of the Amazon ...
Show more >The coast of French Guiana is characterised by the northwestward migration of large mud banks alongshore and by high concentrations of suspended particulate matter (SPM) resulting from the strong influence of the Amazon River outflow. Surface OLI SPM concentration, linked to the footprint of the subtidal part of mud banks due to resuspension and migration processes, was used to develop a method to estimate the location of this footprint. A comparison of the results from this method with those obtained by locating the limit of the wave damping, which characterises muddy coasts, revealed good performance of the method based on recurring SPM values. The migration rates of the mud banks in French Guiana were calculated according to the delimitation of their subtidal parts, and showed slightly higher values (2.31 km/year) than suggested by earlier studies. In comparison with other methods, the migration rate estimated using the method proposed within the framework of this study takes into account the variability of the shape of the subtidal part for the first time. It was also shown that the mud banks existing on the coastal area of French Guiana present two different shapes. Our results clearly demonstrate the advantage of ocean colour data to describe mud banks according to their subtidal part, delimited using the assessment of SPM temporal variability.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL